How Not To Exorcise A Demon
From Shousetsu Bang*Bang Wiki
How Not To Exorcise A Demon is a story written by yabamena and illustrated by olukemi. It ran in Issue 12 at http://s2b2.livejournal.com/64617.html, and is mirrored at http://www.shousetsubangbang.com/mirror/how-not-to-exorcise-a-demon/.
Summary
From pinboard.in: "One night, a boy walks through Free Montgomery's (exorcist for hire) door. Point one: through HIS door. Point two: THROUGH his door."